Not a serious one, but can be troubling.

When an answer is entered into the first answer field, the clue field automatically fills with a count of the number of words in it.

Two problems with this:

• If I'm editing that answer, this wipes out any previous clue that I may have entered
  
• The word count isn't always accurate. E.g., if the answer I put it is "A Bug's Life", this is counted as four words.